I recently upgraded to mongodb npm module version 2.2.0 (from 2.1.21) and now get "no valid replicaset members found" when trying to connect a Mongo 3.0 database.

Repro steps:

$ npm install mongodb@2.2.0
$ node
> var MongoClient = require('mongodb').MongoClient
> MongoClient.connect('mongodb://appuser:<redacted>@candidate.2.mongolayer.com:10411,candidate.3.mongolayer.com:10649/app?replicaSet=set-56be39f36887897ebf0037db', (err, db) =>

{ console.log(err, !!db); }

)

{ [MongoError: no valid replicaset members found] name: 'MongoError', message: 'no valid replicaset members found' }

false

Same test with 2.1.21 - it works:

$ npm install mongodb@2.1.21
$ node
> var MongoClient = require('mongodb').MongoClient
> MongoClient.connect('mongodb://appuser:<redacted>@candidate.2.mongolayer.com:10411,candidate.3.mongolayer.com:10649/app?replicaSet=set-56be39f36887897ebf0037db', (err, db) =>

{ console.log(err,!!db); }

)
null true

I couldn't find documentation on if there were API changes in 2.2.0?